The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 17, 2026
Filed:
Aug. 27, 2020
Covestro Intellectual Property Gmbh & Co. KG, Leverkusen, DE;
Maxime Paven, Mainz, DE;
Vera Taschner, Langenfeld, DE;
Sven Hobeika, Solingen, DE;
Thomas Eckel, Dormagen, DE;
Stamo Mentizi, Cologne, DE;
Igor Pochorovski, Bergisch Gladbach, DE;
Andrij Pich, Herzogenrath, DE;
Ayse Deniz, Neuss, DE;
Sven Buschmann, Aachen, DE;
Covestro Deutschland AG, Leverkusen, DE;
Abstract
The invention relates to a polyphosphazene produced by a method comprising the steps a) and b): a) converting an in particular cyclical phosphazene by means of phenol in the presence of a base; b) further converting by means of a special aromatic diphenol in the presence of a base, wherein the molar ratio of phenol used to cyclical phosphazene used is in the range from 3.5:1 to 1:1. The invention also relates to a method for producing the polyphosphazene and to a molding compound containing the polyphosphazene and a thermoplastic polymer.